Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study
Problem statement: Evapotranspiration (ET) has crucial role in agricultural activity, water management and hydraulic engineering. Recently many forms of the equation have been applied for estimating daily and monthly evapotranspiration around the world. Approach: In this study, the daily and monthly...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Science Publications
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13688/ http://psasir.upm.edu.my/id/eprint/13688/1/ajessp.2009.698.705.pdf |
| _version_ | 1848842181126651904 |
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| author | Saghravani, Seyed Reza Mustapha, Sa'ari Ibrahim, Shaharin Randjbaran, Elias |
| author_facet | Saghravani, Seyed Reza Mustapha, Sa'ari Ibrahim, Shaharin Randjbaran, Elias |
| author_sort | Saghravani, Seyed Reza |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Problem statement: Evapotranspiration (ET) has crucial role in agricultural activity, water management and hydraulic engineering. Recently many forms of the equation have been applied for estimating daily and monthly evapotranspiration around the world. Approach: In this study, the daily and monthly ET was estimated by Penman, Penman-Monteith (P&M) and Hargreaves equation to evaluate general relationships for estimating monthly and daily values of these 3 methods and also effect of different parameters such as Humidity and
wind speed on fluctuation of ET. Results: The results
showed that maximum and minimum values were belonging to Hargreaves and P&M models, respectively. Conclusion:
Statistical analysis showed significant difference among the three methods and coefficient variant for daily and monthly analysis was 18.49 and 7.17 respectively. However, the difference between mean value of P&M and Hargreaves, that has the most different, is 1 mm year−1. |
| first_indexed | 2025-11-15T07:55:03Z |
| format | Article |
| id | upm-13688 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:55:03Z |
| publishDate | 2009 |
| publisher | Science Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-136882017-12-06T03:08:48Z http://psasir.upm.edu.my/id/eprint/13688/ Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study Saghravani, Seyed Reza Mustapha, Sa'ari Ibrahim, Shaharin Randjbaran, Elias Problem statement: Evapotranspiration (ET) has crucial role in agricultural activity, water management and hydraulic engineering. Recently many forms of the equation have been applied for estimating daily and monthly evapotranspiration around the world. Approach: In this study, the daily and monthly ET was estimated by Penman, Penman-Monteith (P&M) and Hargreaves equation to evaluate general relationships for estimating monthly and daily values of these 3 methods and also effect of different parameters such as Humidity and wind speed on fluctuation of ET. Results: The results showed that maximum and minimum values were belonging to Hargreaves and P&M models, respectively. Conclusion: Statistical analysis showed significant difference among the three methods and coefficient variant for daily and monthly analysis was 18.49 and 7.17 respectively. However, the difference between mean value of P&M and Hargreaves, that has the most different, is 1 mm year−1. Science Publications 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13688/1/ajessp.2009.698.705.pdf Saghravani, Seyed Reza and Mustapha, Sa'ari and Ibrahim, Shaharin and Randjbaran, Elias (2009) Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study. American Journal of Environmental Sciences, 5 (6). pp. 698-705. ISSN 1553-345X; ESSN: 1558-3910 http://thescipub.com/abstract/10.3844/ajessp.2009.698.705 10.3844/ajessp.2009.698.705 |
| spellingShingle | Saghravani, Seyed Reza Mustapha, Sa'ari Ibrahim, Shaharin Randjbaran, Elias Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| title | Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| title_full | Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| title_fullStr | Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| title_full_unstemmed | Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| title_short | Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| title_sort | comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study |
| url | http://psasir.upm.edu.my/id/eprint/13688/ http://psasir.upm.edu.my/id/eprint/13688/ http://psasir.upm.edu.my/id/eprint/13688/ http://psasir.upm.edu.my/id/eprint/13688/1/ajessp.2009.698.705.pdf |